import React, {Component} from "react";
import './index.css'

export default class Item extends Component {

    state = {
        mouse: false,
    }

    handleCheck = (id) => {
        return (event) => {
            this.props.updateTodo(id, event.target.checked)
        }
    }

    handleMouse = (flag) => {
        return () => {
            this.setState({mouse: flag})
        }
    }

    handleDelete = (id) => {
        if (window.confirm('确定删除吗?')) {
            this.props.deleteTodo(id);
        }
    }

    render() {
        const {id, name, done} = this.props
        const {mouse} = this.state
        return (
            <li style={{backgroundColor: mouse ? '#ddd' : 'white'}} onMouseEnter={this.handleMouse(true)}
                onMouseLeave={this.handleMouse(false)}>
                <label>
                    <input type="checkbox" checked={done} onChange={this.handleCheck(id)}/>
                    <span>{name}</span>
                </label>
                <button onClick={() => {
                    this.handleDelete(id)
                }} className="btn btn-danger"
                        style={{display: mouse ? 'block' : 'none'}}>删除
                </button>
            </li>
        )
    }
};